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a Number of antibiotic courses ordered, supplied, administered, or continued at a specific visit for persons diagnosed with the common cold (ICD-9-CM codes 460.0, 465, or 472.0) per 10,000 population.

b The 2000-2001 data for Asian are Asian and Pacific Islander collected in aggregate.

c Estimates of the civilian noninstitutionalized population used in calculating visit rates by age, sex, race, and geographic region are from special tabulations developed by the Population Division, U.S. Census Bureau, using the July 1, 2003 and July 1, 2004 set of State population estimates, and reflect Census 2000 data.

d Year 2000 rates use U.S. Census Bureau monthly postcensal estimates of the civilian noninstitutional population as July 1, 2000 and are available at the Census Bureau Internet site: http://www.census.gov/main/www/cen2000.html. Figures have been adjusted for net underenumeration using the 1990 National Population Adjustment Matrix. Regional estimates were provided by the Division of Health Interview Statistics (DHIS), National Center for Health Statistics, and are also based on U.S. census estimates of the civilian noninstitutionalized population as of July 1, 2000.

DSU - Data do not meet the criteria for statistical reliability, data quality or confidentiality. An estimate is unreliable if the unweighted number is less than 30 or the relative standard error is greater than 30.

Source: Centers for Disease Control and Prevention, National Center for Health Statistics, National Ambulatory Medical Care Survey and National Hospital Ambulatory Medical Care Survey.